Ready for a serious challenge? With our Festival Of Endurance event, we've got an ultra run through the Ashdown Forest and South Downs. Pick your discipline - triathlon, duathlon, aquabike, aquathlon, swim or run - and choose a distance from the middle to ultra. Recruit your friends and celebrate completing your challenge in our festival village.
Join us for this Festival Of Endurance event at the historical Hever Castle Kent. The childhood home of Anne Boleyn, Hever Castle is a stunning location for a race.
Swim from The Loggia with its Nymph’s Fountain inspired by the Trevi Fountain in Rome. Cycle the beautiful Kent and Sussex countryside up through the Ashdown Forest. Run through the award winning castle grounds and picturesque surrounding villages, not forgetting the South Downs National Park for the Ultra Runners.
Athletes and spectators can enjoy the lovely Hever grounds and a fun-packed festival village featuring live music, shopping, food and drink, children’s entertainment, yoga and more.
Our 2022 Festival Of Endurance event was a huge success and we expect 2023 to be even better!
Festival Of Endurance returns in 2023 for a day full of sporting excitement – highlights include our full iron distance, The Bastion and half iron distance, The Gauntlet and our 50 Miler ultra run.
We also have long distnace duathlons, aquathlons, aquabikes, running and swimming races.
This year, we have added new distances to the Festival Of Endurance program: 34 Miler Ultra Run, 50 Miler Ultra Run Relay, Marathon Run Relay, 10K Swim Relay and the 5K Swim!
We hope you will be one of the first to take part in these new and exciting events!
Take a look at our competitor guides for The Festival of Endurance 2023!
Read the in-depth Course Guide for your chosen distance and view the Event Guide for partner offerings and full details of what to expect on Race Day,
We are delighted to announce that this event is governed by British Triathlon. If you are competing in a triathlon or multisport event you will need a valid membership of day licence to compete.
We are delighted to have partnered with Macmillan Cancer Support for another year after the success of 2022. They do whatever it takes to give people affected by cancer the support they need. Macmillan are going all out to support people with cancer. But they can’t do it without you.
You can support Macmillan by signing up for a charity place and committing to fundraise or making a donation via the registration form.
We present trophies to 1st place winners, and prize pots for podium place of the Olympic and Gauntlet triathlons. All participants receive a medal, and if you'd like to remember your times go to your Active account and click 'Purchase Merchandise' to add Medal Insert to your booking.
Photographers are positioned around the course, finish line, and event village to capture you in action. 50% off ALL your Official Digital Photos if you buy online now - just £15! Terms apply.
Train for your race in Castle Race Series Kit and purchase a finisher t-shirt to make sure everyone know you've conquered the castle!
Tri Training Harder help athletes prepare for our iconic events through different coaching packages which include race specific training plans, pre-event training sessions and a virtual training club.
This event is a fantastic day out - we welcome everyone to come along, explore the stunning castle grounds, cheer athletes on from numerous up close viewing spots, enjoy the event village entertainment and soak up the festival atmosphere. Tickets set to discounted prices.
We host a family campsite for tents and caravans in the castle grounds, with pitches starting at £30. Go to your Active account and click 'Purchase Merchandise' to add camping to your registration.
Have a look at the event results from 2022 to see how our athletes performed to inspire your racing in 2023.
We are always looking for fantastic marshals for our sporting events. There are a number of ways to get involved, whether trading places, raising money for charity or as a paid crew member. Interested?
Precision Fuel & Hydration's electrolyte drinks, energy gels and chews will be available at our feed stations this season. Try out their taster pack in your training, see booking email for special 15% discount code.
Details on all UK bike hire for our 2023 events coming soon.
Yonda put your performance as their focus and offer our athletes special discounts codes for buying wetsuits made from sustainable, earth friendly neoprene. See your booking email for 15% discount code.
Sign up for a discounted charity race place and raise vital funds for people with cancer
Keep up to date with exclusive discounts, launches and news.